Thyroid & Adrenal
The major determinant of operability in patents who have a VSD is:
|A||The size of defect|
|B||The location of the defect|
|C||The pulmonary vascular resistance|
|D||The age of the patient|
a. The increase in pulmonary resistance is considered relative to the systemic resistance.
b. Operative results are not good if the pulmonary resistance increases equal to the systemic resistance.
c. In such cases hazards of the operation are increased while benefits are decreased.
d. One third of the patients are successfully operated in increased pulmonary vascular resistance.
e. The changes continue and the death usually occurs in first three years in such cases.
f. The life expectancy of the adult patients with a VSD depends on the pulmonary blood flow.
g. The only known hazard with small defect is endocarditis.
h. Patients with a significant increase in pulmonary vascular resistance may progress to the complete Eisenmenger’s syndrome.
i. Death of such patients usually occur by 4o years.
j. At present heart-lung transplant may be used for such patients.